Minor macro cleanup

- removed the Provides: scl-package(%scl) because it's redundant.
  The same is already done by included dependency generator.
- removed the %global __provides_exclude_from ^%{_libdir}/.*.so.*$
  (revert by popular demand)
- add new Requires: %scl_runtime, as every scl package requires the
  runtime to be installed anyway
  NOTE: this won't work for subpackages, those have to be handled by
  hand

macros.scl

@@ -60,6 +60,7 @@
 Summary: Debug information for package %{name}
 Group: Development/Debug
 AutoReqProv: 0
+Requires: %scl_runtime
 Provides: scl-package(%scl)
 %description debuginfo
 This package provides debug information for package %{name}.
@@ -69,10 +70,9 @@ package or when debugging this package.
 %defattr(-,root,root)
 %endif
 %{nil}}
-BuildRequires: scl-utils-build
-Provides: scl-package(%scl)
-%global __provides_exclude_from ^%{_libdir}/.*.so.*$
+Requires: %scl_runtime
 }
+BuildRequires: scl-utils-build
 %{?scl_package_override:%scl_package_override}
 }